Falanqaynta Codsiga iyo Faa'iidada ee Coke-ga Batrool ee Graphitized ee Warshadaha Elektrolysis-ka Aluminium
I. Isticmaalka Batrool Kookaha ee Graphitized ee ku jira Baloogyada Kathode iyo Koollada Anode
1. Soo saarista Baloogga Katooliga
Kookaha batroolka ee garaafka lagu sameeyay waa walaxda ugu muhiimsan ee ceeriin ee lagu sameeyo baloogyada kaarboonka ee cathode-ka ee garaafka lagu sameeyay. Ka dib daaweynta garaafka heerkulka sare leh ee qiyaastii 3000°C, daahirnimadeeda kaarboon waxay ka badan tahay 98%, cufnaanta dhabta ahna si weyn ayay u kordheysaa, taasoo sameysa qaab-dhismeed kiristaal garaafka oo aad loo nidaamiyay. Qaab-dhismeedkani wuxuu baloogyada katooliga ku siinayaa sifooyinka soo socda:
- Iska caabbinta nabaad-guurka sodium-ka ee la xoojiyay: Qaab-dhismeedka graphitized-ka ee saafiga ah ayaa si wax ku ool ah uga hortagaya gelitaanka sodium-ka inta lagu jiro elektrolisis-ka aluminiumka, taasoo sii dheereyneysa cimriga adeegga cathode-ka.
- Korantada oo la hagaajiyay: Graphitization-ku wuxuu si weyn u yareeyaa iska caabinta, isagoo hoos u dhigaya hoos u dhaca danabka hoose ee unugyada iyo isagoo yareynaya isticmaalka tamarta wax soo saarka aluminiumka qiyaastii 5% – 10%.
- Xasiloonida kulaylka ee la hagaajiyay: Ballaarinta mugga yar ee heerkulka sare waxay yareysaa khatarta dildilaaca ee ay keento walbahaarka kulaylka.
2. Diyaarinta Koolada Anode
Koolada anode-ka, kookaha batroolka ee la sawiray wuxuu inta badan u adeegaa sidii wax lagu daro kaarboon iyo walxo qaab-dhismeed gudbiya, oo leh saameynahan soo socda:
- Korantada oo la xoojiyay: Qaab-dhismeedka garaafka leh wuxuu kor u qaadaa qaybinta hadda jirta oo isku mid ah, isagoo yareynaya danab-dhaafka anode.
- Iska caabbinta oksaydhka oo la hagaajiyay: Tirada sulfur-ka oo hooseysa (badanaa <0.06%) waxay yareysaa dildilaaca gaaska ee sababa inta lagu jiro falgalka CO₂, taasoo yaraynaysa isticmaalka anode halkii tan oo bir ah (tusaale ahaan, hoos u dhac 12% ah oo ku yimaada codsiga shirkad gaar ah).
- Qaab-dhismeedka daloolada la hagaajiyay: Graphitization wuxuu yareeyaa daloolada coke-ga, isagoo kordhinaya cufnaanta anode-ka iyo xoogga farsamada.
II. Faa'iidooyinka Muhiimka ah ee Coke-ga Batrool-ka ee Graphitized marka loo eego Coke-ga Batrool-ka ee Calcined
| Qiyaasta Waxqabadka | Batrool Coke oo la sawiray | Coke-ka Saliida Calcined |
|---|---|---|
| Waxyaabaha ku jira sulfur | 0.03%–0.06% (nooca baaruuddu ku yar tahay) | ~0.5% (nooca caadiga ah) |
| Heerka nuugista | 90%–95% | 80%–90% |
| Shahaadada Graphitization | Aad u garaafiksan (cufnaanta dhabta ah ≥2.18 g/cm³) | Qayb ahaan garaafik ah (cufnaanta dhabta ah 1.8–2.0 g/cm³) |
| Waxyaabaha wasakhda ah | Dambas ≤0.15%, walax isbeddelaysa <0.5% | Dambas 0.3%–0.8%, walax isbeddelaysa 0.7%–1.5% |
| Heerka ballaarinta kulaylka | Hoose (nooca kookaha irbadda) | Sare (nooca kookaha isbuunyada ah) |
| Xaaladaha codsiga | Elektroodhada graphite-ka awoodda sare leh, alaabada kaarboonka gaarka ah | Anodyada caadiga ah ee la dubay, elektroodhada silikoon ee warshadaha |
Faa'iidooyinka Gaarka ah:
1. Hagaajinta Waxqabadka Elektrokiimikada
- Iska caabbinta kookaha batroolka ee graphitized ayaa 30%–50% ka hooseysa kan kookaha calcined, taasoo si weyn u yareyneysa isticmaalka tamarta unugyada electrolysis. Tusaale ahaan, elektroodhada coke ee irbadda 750 mm, conductivity ayaa ka badan kan kookaha caadiga ah saddex jibaar, taasoo hagaajineysa hufnaanta sameynta birta ilaa 25 daqiiqo foorno kasta.
- Tirada sulfur-ka oo yar waxay yareysaa falcelinta u dhaxaysa anodes-ka iyo electrolytes-ka ay ku jirto fluoride-ka, taasoo yaraynaysa bararka gaaska keena iyo kordhinta cimriga anode-ka.
2. Horumarinta Hantida Farsamada
- Graphitization waxay kordhisaa adkeysiga walxaha iyo iska caabbinta shoogga kulaylka. Deegaannada elektrooliga aluminiumka heerkulka sare leh, isku-darka ballaarinta kulaylka ee baloogyada cathode-ka ee graphitized waa 30% ka hooseeya kan kookaha calcined, taasoo yaraynaysa burburka qaab-dhismeedka ee ka dhasha isbeddellada heerkulka.
- Cufnaanta dhabta ah ee sare u kacday (≥2.18 g/cm³) waxay xoojisaa isku-dhafka walxaha, iyadoo yaraynaysa gelinta dareeraha aluminiumka iyo nabaad-guurka sodium.
3. Faa'iidooyinka Deegaanka iyo Dhaqaalaha
- Hoos u dhaca ku jira sulfur-ka ayaa hoos u dhigaya qiiqa SO₂, isagoo buuxinaya xeerarka deegaanka. Tusaale ahaan, warshad aluminium ah oo adeegsata kookaha graphitized-ka sulfur-ka yar ayaa hoos u dhigtay qiiqa SO₂ halkii tan ee aluminium-ka 15%.
- Iyadoo ay jiraan kharashyo badan (qiyaastii 1.5-2 jeer ka badan kookaha la kariyey), cimriga dheer iyo isticmaalka tamarta oo hooseeya ayaa ka dhiga maalgashiyada bilowga ah. Tusaale ahaan, cimriga baloogga cathode wuxuu ka kordhay 5 ilaa 8 sano, taasoo hoos u dhigtay kharashyada guud 20%.
III. Kiisaska Codsiga iyo Taageerada Xogta
- Warshadaha Elektrolisiska Aluminium: Caalam ahaan, 70% kookaha calcined-ka ah ayaa loo isticmaalaa anodes-ka elektrolisiska aluminium, laakiin suuqyada heerka sare ah (tusaale ahaan, cathodes-ka graphitized) ayaa si isa soo taraysa u qaadanaya kookaha graphitized. Hal shirkad ayaa hoos u dhigtay isticmaalka anode-ka laga bilaabo 420 kg/t-Al ilaa 370 kg/t-Al ka dib markii la qaatay cathodes-ka graphitized, taasoo badbaadinaysa RMB 200 milyan sannadkii.
- Warshadaha Birta: Elektroodka irbadda kookaha ee 750 mm oo sidda 100,000 oo hadda socda ayaa gaaray hufnaanta sameynta birta oo ah 25 daqiiqo foorno kasta, iyadoo la adeegsanayo saddex jeer ka badan kookaha caadiga ah.
- Qaybta Kaydinta Tamarta: Kookaha calcined ee asfalt-ka lagu beddelay ayaa hagaajiyay cimriga wareegga anode-ka adag ee kaarboonka iyadoo la adeegsanayo 400 wareeg, taasoo ka heshay jiidis suuqyada baytariyada sodium-ion.
IV. Gunaanad
Kookaha batroolka ee graphitized, iyada oo loo marayo garaafka heerkulka sare, wuxuu muujiyaa daahirnimo sare, koontarool koronto, iyo xasillooni kuleyl marka la barbar dhigo kookaha batroolka ee calcined, taasoo ka dhigaysa mid ku habboon baloogyada katooliga ee aluminiumka ee electrolysis-ka sare iyo wax soo saarka koollada anode ee gaarka ah. Iyadoo ay jiraan kharashyo badan, cimrigeeda oo la dheereeyey, waxtarka tamarta, iyo faa'iidooyinka deegaanka ayaa u dhigaya inay tahay agab muhiim u ah kor u qaadista warshadaha aluminiumka. Horumarka mustaqbalka ee tignoolajiyada garaafka (tusaale ahaan, daaweynta heerkulka aadka u sarreeya ee 3000°C) waxay sii ballaarin doontaa codsigeeda garaafka heerka nukliyeerka, anodes-ka baytariyada lithium-ion, iyo meelaha kale ee casriga ah.
Waqtiga boostada: Sebteembar-22-2025